Oscillating engine



/ M. E. BOLLINGER.

OSOILLATING ENGINE.

No. 31,775. Patented Mar. 26, 1861.

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UNITED STATES PATENT onruon.

MARTIN ELI BOLLINGER, or LITTLESTOWN, PENNSYLVANIA:

OSCILLATING ENGINE.

Specification of Letters Patent No. 31,77 5, dated March 26, 1861.

To all whom it may concern:

Be it known that I, MARTIN ELI BOL- LINGER, of Littlestown, in thecounty of Adams and State of Pennsylvania, have invented certain new anduseful Improvements in Oscillating Steam-Engines; and I' do herebydeclare that the following is a full, clear, and exact description ofthe same, reference beinghad to the accompanying drawings, making partof this specification, in which Figure l is a side elevation of anengine embodying my improvements. vertical longitudinal section of thecylinder. Fig. 3is a vertical longitudinal section of the trunnion.

Similar letters of reference indicate corre' sponding parts intheseveral figures.

The nature of my invention consists, 1st,

in a novel manner of hanging an oscillating cylinder; 2d, in a novelconstruction of trunnion and valves; 3rd, in a device serving thecombined purposes of stopping and starting reversing and cut off gear;4th, in the use of a spring or other device to equalize the motion ofthe cylinder as hereinafter explained.

A represents a cylinder suspended from its upper side by a singletrunnion B running completely across and journaled at its respectiveends in standards C. The said trunnion is suitably packed for thecylinder to turn upon it and performs the functions of supply andexhaust valves, being perforated centrally and formed with a partition7), separating the induction port 7', from the exhaust port- 6.

G, is a toothed segment pivoted at its center 9, to one of the standardsC, and provided with a handle or lever H, by which it is turned whenrequisite.

I, is a pinion secured to the trunnion B and meshing with the segment G.

K, is a spring operating to receive the momentum of the cylinder andassist in its return stroke. The said spring may be of steel, gumelastic or other material.

L, is the piston; M, the piston rod; N, a crank; O, a fly wheel and B.an oil cup.

The drawing represents the engine on the dead center the piston being atone end of its stroke. The continued rotation of the Fig. 2 is afly-wheel in the direction indicated by the arrow, by depressing theforward end of the cylinder brings the port 8, into com- -municationwith the induction port f, and

the port t, with the exhaust port 6, producing the backward stroke ofthe piston, after the completion of which the reverse motion of thecylinder brings the port If, into communication with the induction and.the port- 8, with the exhaust, thereby imparting the customarycontinuous rotation to the crank T. I

It will be understood from the foregoing description that the trunnionB, is stationary while the engine is in continuous motion. By rotatingthe trunnion 90 degrees, by means 'of the segment the ports will bethrown entirely out of connection and the engine thereby stopped, and byrotating it 180 degrees the motion will be reversed.

By a less mot-ion of the trunnion the engine may be made to cut off atany part of the stroke desired so as to work the steam expansively. Itwill thus be seen that the trunnion B, and segment G, as constructed andarranged constitute a combined starting and stopping, reversing and cutoff gear of simple and efiective character. A scale may be marked uponthe post P, to assist in setting the handle H at any proper point.

\Vhat I claim as new and desire to secure by Letters Patent, is.

1. Suspending an oscillating cylinder by a single shaft or trunnion onits upper side as set forth.

2. The trunnion or hollow shaft B, containing at its respective ends theinduction port f, and the exhaust port 6, and applied to the cylinder A,in the manner and for the purposes set forth.

3. The combination of the segment rack G, with the pinion I, forrotating the trunnion B, in the manner and for the purposes explained.

4. The spring K, or its described equivalent applied to the cylinder A,to equalize its motion, as set forth.

MARTIN E. BOLLINGER.

Witnesses:

GEO. NVILL, JACOB STERMER, JAooB M. BOLLINGER.

